Optical flint
火石光学玻璃
🧩 词语组成解析
flint
[flint]
n. 燧石，火石;（打火机等的）打火石;
🗣️ 情景例句
Philip and I were living with Grandma and Grandpa. Philip
与我和爷爷， 奶奶住在一起。
Would you mind if I opened the window?
我开窗，可以吗？
Relatively few people are prepared to sacrifice holiday time for the pleasure of travlling by sea.
没有多少人会为享受坐船旅行的乐趣而牺牲假期的时间。